As both a literary genre and a view of life, tragedy has from the very beginning spurred a dialogue between poetry and philosophy. Plato famously banned tragedians from his ideal community because he believed that their representations of vicious behavior could deform minds. Aristotle set out to answer Plato's objections, arguing that fiction offers a faithful image of the truth and that it promotes emotional health through the mechanism of catharsis. Aristotle's definition of tragedy actually had its greatest impact not on Greek tragedy itself but on later Latin literature, beginning with...